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Finding the Fourth Proportional to 255,020.72, 382,705.32 and 88,808.72

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Solution

The fourth proportional to 255,020.72, 382,705.32 and 88,808.72 is: 133,273.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,020.72 : 382,705.32 = 88,808.72 : x
  2. Step 2: Convert to fraction form
    255,020.72/382,705.32 = 88,808.72/x
  3. Step 3: Cross multiply
    255,020.72x = 382,705.32 × 88,808.72
  4. Step 4: Simplify right side
    255,020.72x = 33,987,569,606.39
  5. Step 5: Solve for x
    x = 33,987,569,606.39/255,020.72
  6. Step 6: Final answer
    x = 133,273.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.